/* ═══════════════════════════════════════════════════════════════════════════
   S.5 ASCENT — page chrome around the canvas.

   The canvas draws the world; this file draws everything a player touches:
   HUD, touch pad, menus. Brighter than the previous build, which was near-black
   panels over a near-black canvas.
   ═══════════════════════════════════════════════════════════════════════════ */

:root {
  --navy-900:#0c1c34;
  --navy-800:#12294a;
  --navy-700:#1b3a6b;
  --blue-400:#5fa8e0;
  --blue-300:#8fd0ff;
  --gold:#f5c542;
  --gold-hi:#fff0a8;
  --teal:#3fd0c8;
  --amber:#f0a848;
  --violet:#c88cf5;
  --ink:#eaf2fb;
  --ink-dim:#9dbbd9;
  --line:rgba(143,208,255,0.22);
  --panel:rgba(12,28,52,0.94);
  --ff:"Jost", system-ui, -apple-system, "Segoe UI", sans-serif;
  --ff-d:"Cinzel", Georgia, serif;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

html,body{height:100%;overflow:hidden}

body{
  background:var(--navy-900);
  color:var(--ink);
  font-family:var(--ff);
  /* Stops the whole page rubber-banding when a thumb drags on the touch pad.
     The previous build let the page scroll underneath the controls. */
  overscroll-behavior:none;
  touch-action:none;
  -webkit-user-select:none;user-select:none;
  -webkit-tap-highlight-color:transparent;
}

.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;
}

#stage{position:fixed;inset:0;overflow:hidden}

#gameCanvas{
  display:block;width:100%;height:100%;
  background:var(--navy-800);
}

/* Focus is always visible — the game is fully keyboard playable. */
:focus-visible{outline:3px solid var(--gold);outline-offset:2px;border-radius:6px}

/* ── HUD ─────────────────────────────────────────────────────────────── */
#hud{
  position:absolute;top:0;left:0;right:0;
  display:flex;align-items:flex-start;justify-content:space-between;gap:10px;
  padding:calc(10px + env(safe-area-inset-top)) 14px 10px;
  pointer-events:none;
  background:linear-gradient(180deg,rgba(8,18,34,.72),rgba(8,18,34,0));
}
#hud[hidden]{display:none}

.hud-l{display:flex;flex-direction:column;gap:2px;min-width:0}
.hud-k{font-family:var(--ff-d);font-size:.58rem;letter-spacing:.2em;text-transform:uppercase;color:var(--gold)}
.hud-v{font-size:.92rem;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

.hud-c{display:flex;gap:8px;align-items:center;flex-wrap:wrap;justify-content:center}
.hud-chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:.8rem;color:var(--ink);
  background:rgba(12,28,52,.72);border:1px solid var(--line);
  border-radius:99px;padding:5px 12px;white-space:nowrap;
}
.dot-gold{
  width:10px;height:10px;border-radius:50%;display:inline-block;
  background:var(--gold);box-shadow:0 0 8px rgba(245,197,66,.8);
}
.lives{color:var(--gold);letter-spacing:.14em}

.hud-r{pointer-events:auto}
.icon-btn{
  width:40px;height:40px;font-size:1rem;cursor:pointer;
  background:rgba(12,28,52,.72);color:var(--ink);
  border:1px solid var(--line);border-radius:10px;
}
.icon-btn:hover{border-color:var(--gold);background:rgba(27,58,107,.9)}

/* ── TOUCH CONTROLS ──────────────────────────────────────────────────── */
#touch-controls{
  position:absolute;left:0;right:0;bottom:0;
  display:flex;justify-content:space-between;align-items:flex-end;
  padding:16px calc(16px + env(safe-area-inset-right))
          calc(18px + env(safe-area-inset-bottom))
          calc(16px + env(safe-area-inset-left));
  pointer-events:none;
}
#touch-controls[hidden]{display:none}
.pad-l,.pad-r{display:flex;gap:12px;pointer-events:auto}

.pad{
  width:74px;height:74px;font-size:1.4rem;line-height:1;cursor:pointer;
  color:var(--blue-300);
  background:rgba(12,28,52,.60);
  border:2px solid rgba(143,208,255,.34);
  border-radius:18px;
  -webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);
  transition:transform .07s ease, background .12s ease, border-color .12s ease;
}
.pad:active{transform:scale(.93);background:rgba(45,90,148,.85);border-color:var(--blue-300)}
.pad.jump{
  width:92px;height:92px;font-size:1.7rem;
  color:var(--gold-hi);border-color:rgba(245,197,66,.45);
  background:rgba(58,44,12,.55);
}
.pad.jump:active{background:rgba(122,90,26,.9);border-color:var(--gold)}

/* A pointer device does not need a thumb pad taking up a corner of the
   screen; touch devices keep it at full strength. */
@media (hover:hover) and (pointer:fine){
  #touch-controls{opacity:.30}
  #touch-controls:hover,#touch-controls:focus-within{opacity:1}
}

/* ── SCREENS ─────────────────────────────────────────────────────────── */
.screen{
  position:absolute;inset:0;z-index:10;
  display:flex;align-items:center;justify-content:center;
  padding:20px;overflow-y:auto;
  background:radial-gradient(circle at 50% 34%, rgba(27,58,107,.86), rgba(6,12,24,.96) 68%);
  -webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);
}
/* The author `display:flex` above beats the `hidden` attribute's user-agent
   `display:none` unless this is stated explicitly. */
.screen[hidden]{display:none}

.panel{
  width:min(560px,100%);
  max-height:100%;
  text-align:center;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:18px;
  padding:30px 28px;
  box-shadow:0 24px 70px rgba(0,0,0,.55), 0 0 0 1px rgba(245,197,66,.10);
}

.eyebrow{font-family:var(--ff-d);font-size:.6rem;letter-spacing:.26em;text-transform:uppercase;color:var(--gold);margin-bottom:12px}
.logo{
  font-family:var(--ff-d);font-size:clamp(2.4rem,9vw,3.6rem);line-height:1;
  letter-spacing:.1em;
  background:linear-gradient(135deg,var(--gold-hi),var(--gold) 55%,var(--amber));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.title{
  font-family:var(--ff-d);font-weight:500;
  font-size:clamp(1.5rem,5.4vw,2.2rem);letter-spacing:.16em;text-transform:uppercase;
  color:var(--ink);margin-top:4px;
}
.title.sm{font-size:clamp(1.2rem,4.2vw,1.6rem);letter-spacing:.12em}

.rule{width:74px;height:2px;margin:16px auto;background:linear-gradient(90deg,transparent,var(--gold),transparent)}

.lede{color:var(--ink-dim);font-size:.94rem;line-height:1.66;max-width:44ch;margin:0 auto 20px}
.lede.sm{font-size:.86rem;margin-bottom:14px}

.err{
  color:#ffb4a4;background:rgba(200,58,42,.16);border:1px solid rgba(224,90,72,.5);
  border-radius:10px;padding:12px 16px;margin-bottom:16px;font-size:.86rem;
}
.err[hidden]{display:none}

.btn{
  display:block;width:100%;max-width:300px;
  font:inherit;font-size:.82rem;letter-spacing:.16em;text-transform:uppercase;
  padding:15px 26px;margin:6px auto;cursor:pointer;
  border-radius:11px;border:1px solid transparent;
}
.btn.primary{
  background:linear-gradient(135deg,var(--gold-hi),var(--gold) 55%,var(--amber));
  color:#1a1405;font-weight:600;
}
.btn.primary:hover{filter:brightness(1.1)}
.btn.ghost{background:transparent;color:var(--ink-dim);border-color:var(--line)}
.btn.ghost:hover{color:var(--ink);border-color:var(--blue-400)}

/* ── STAGE SELECT ────────────────────────────────────────────────────── */
.select-h{
  font-family:var(--ff-d);font-size:.58rem;letter-spacing:.24em;text-transform:uppercase;
  color:var(--gold);margin:22px 0 10px;
}
.levels{display:grid;grid-template-columns:repeat(auto-fit,minmax(88px,1fr));gap:8px}

.lvl{
  display:flex;flex-direction:column;align-items:center;gap:3px;
  font:inherit;cursor:pointer;padding:11px 8px;
  background:rgba(27,58,107,.55);color:var(--ink);
  border:1px solid var(--line);border-radius:11px;
  transition:border-color .14s ease, transform .14s ease, background .14s ease;
}
.lvl:hover:not(.locked){border-color:var(--gold);transform:translateY(-2px);background:rgba(45,90,148,.7)}
.lvl.locked{opacity:.42;cursor:not-allowed}
.lvl-n{font-family:var(--ff-d);font-size:1.15rem;color:var(--gold)}
.lvl-name{font-size:.68rem;line-height:1.2}
.lvl-best{font-size:.58rem;color:var(--ink-dim);letter-spacing:.04em}

/* ── STATS ───────────────────────────────────────────────────────────── */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:6px 0 22px}
.stats > div{
  background:rgba(27,58,107,.5);border:1px solid var(--line);
  border-radius:10px;padding:11px 8px;
}
.stats > div.big{grid-column:1/-1;background:rgba(245,197,66,.12);border-color:rgba(245,197,66,.4)}
.stats dt{font-size:.56rem;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-dim);margin-bottom:5px}
.stats dd{font-family:var(--ff-d);font-size:1.02rem;color:var(--gold-hi)}
.stats > div.big dd{font-size:1.5rem}

/* ── FOOT ────────────────────────────────────────────────────────────── */
.controls-note{
  margin-top:20px;padding-top:16px;border-top:1px solid var(--line);
  font-size:.72rem;line-height:1.7;color:var(--ink-dim);
}
.controls-note b{color:var(--blue-300);font-weight:500}

.foot{margin-top:16px;font-size:.72rem;color:var(--ink-dim)}
.foot b{color:var(--gold)}
.foot a{color:var(--blue-300)}
.linkish{
  font:inherit;font-size:inherit;cursor:pointer;
  background:none;border:0;padding:0;
  color:var(--blue-300);text-decoration:underline;
}
.linkish:hover{color:var(--gold)}

/* ── SMALL SCREENS ───────────────────────────────────────────────────── */
@media (max-width:520px){
  .panel{padding:22px 18px;border-radius:14px}
  .levels{grid-template-columns:repeat(3,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .hud-v{font-size:.8rem;max-width:34vw}
  .hud-chip{font-size:.72rem;padding:4px 9px}
  .pad{width:66px;height:66px}
  .pad.jump{width:82px;height:82px}
}

/* Landscape phones are short: shrink the chrome so the playfield keeps room. */
@media (max-height:430px){
  .panel{padding:16px;max-height:96%}
  .logo{font-size:2rem}
  .rule{margin:10px auto}
  .lede{margin-bottom:12px;font-size:.82rem}
  .btn{padding:11px 20px;margin:4px auto}
  .controls-note{display:none}
  .pad{width:58px;height:58px}
  .pad.jump{width:70px;height:70px}
}

@media (prefers-reduced-motion:reduce){
  .lvl,.pad{transition:none}
  .lvl:hover:not(.locked){transform:none}
  .pad:active{transform:none}
}